I ran an independent sample t-test to compare two groups, student sample and Mturk respondents. The homogeniety of variance was not met (variances are not equal and sample sizes of the two groups are drastically different). Sample size of the groups are 113 and 14 respectively). I have a significant finding when running the Welch's t-test. My question is:
- What effect size do I report for a Welches' t-test? Is Cohen's d appropriate?
- Is it approprate to run this test for such drastically different sample sizes?
Mturk respondents (M = 4.23, SD = .69) were more likely to report that they would submit their profiles than undergraduates (M = 3.21, SD = 1.42), t(13.78) = 2.63, p < .05, (Report effect size here).
Thank you for your time and help!